(sic)

Kim Zetter en Wired:

The so-called Republican “plot” was instigated by conservative radio talker Rush Limbaugh (at right) who urged Republican voters in Ohio and Texas before the election to cross over for the primary to rig the nomination for the November election. Voters in those states could do this at the last minute because their local election laws allow voters to change party affiliation at the polls.

(Via Wired News: Did Limbaugh’s Crossover Voters Break Ohio Law?.)